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1.
J World Fed Orthod ; 9(1): 9-12, 2020 03.
Artículo en Inglés | MEDLINE | ID: mdl-32672667

RESUMEN

BACKGROUND: Functional appliances has been used for treatment of skeletal Class II malocclusion for a long time; however, the real skeletal effects, mandibular growth particularly, remain insufficient. Several auxiliary approaches have been attempted with the hope of enhancing treatment effects. In this review, we summarize and discuss the use of additional nutrition and hormones to assist the functional appliance treatment on patients with skeletal Class II malocclusion. METHODS: Relevant articles were identified by electronic research in MEDLINE Ovid using keywords such as "nutrition," "hormone," "functional appliance," "orthodontics," "maxillofacial development," and "maxillofacial abnormalities." References of related articles were assessed for relevant studies to identify additional published references. RESULTS: The literature search yielded 239 studies. According to the current literature, use of additional nutrition and hormones, including growth hormones, sex hormones, insulin, and insulin-like growth factor I, seem to improve the effects of functional appliance treatment on patients with skeletal Class II malocclusion. CONCLUSIONS: The current evidence indicates that additional nutrition or hormones might improve the treatment effects on mandibular hypoplasia compared with the functional appliance alone, which is a promising approach and calls for further studies.


Asunto(s)
Hormonas Esteroides Gonadales/uso terapéutico , Hormona de Crecimiento Humana/uso terapéutico , Maloclusión Clase II de Angle/terapia , Terapia Nutricional , Aparatos Ortodóncicos Funcionales , Terapia Combinada , Humanos , Terapia Nutricional/métodos , Resultado del Tratamiento
2.
Orthod Craniofac Res ; 21(4): 202-215, 2018 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-30152171

RESUMEN

The aim of this review was to evaluate available evidence on the effect of early orthodontic management and myofunctional treatment in the developing dentition children, on anterior open bite correction, as well as on normalization of patterns of mouth breathing, swallowing and tongue resting position and pressure. Electronic searches in MEDLINE, Cochrane and LILACS, without language restrictions were conducted. Additionally, unpublished literature was identified. Randomized controlled trials, or controlled clinical trials, comparing interventions applied to manage anterior open bite and other muscle functions such as breathing/swallowing pattern and tongue resting position and pressure, were considered. Quality assessment was based on the Cochrane Risk of Bias tool. Random effects meta-analyses were conducted to assess treatment effects. From the 265 initial search results, 15 articles were included in the review. Eight were randomized controlled trials (RCTs) and 7 were controlled clinical trials. Treatment outcomes comprised skeletal and dentoalveolar changes recorded cephalometrically, mouth posture and lip closure normalization, improvement of tongue resting position/pressure and modification of swallowing pattern. Quantitative synthesis was possible for only 2 of the included RCTs. There was no evidence to support bonded lingual spurs over banded fixed appliances for the correction of anterior open bite in mixed dentition children presenting nonnutritive oral habits at the onset of treatment (SMD: -0.03; 95%CI: -.81, 0.74; P = 0.94). Although early orthodontic management and myofunctional treatment in the deciduous and mixed dentition children appears to be a promising approach, the quality of the existing evidence is questionable.


Asunto(s)
Dentición Mixta , Músculos Faciales , Maloclusión , Terapia Miofuncional , Mordida Abierta , Humanos , Cefalometría , Ensayos Clínicos Controlados como Asunto , Bases de Datos Factuales , Deglución , Músculos Faciales/fisiopatología , Maloclusión/terapia , Respiración por la Boca , Terapia Miofuncional/métodos , Mordida Abierta/terapia , Aparatos Ortodóncicos Fijos , Aparatos Ortodóncicos Funcionales , Ensayos Clínicos Controlados Aleatorios como Asunto , Lengua/fisiopatología , Diente Primario , Resultado del Tratamiento
3.
J Contemp Dent Pract ; 16(3): 243-7, 2015 Mar 01.
Artículo en Inglés | MEDLINE | ID: mdl-26057926

RESUMEN

This case report demonstrates the treatment effects of palatal crib combined with the myofunctional therapy in a child with anterior open bite (AOB) due to thumb sucking and habitual anterior and low tongue position. The patient, an 11-year-old boy, had an anterior open bite and flared and spaced upper and lower incisors. Palatal cribs in conjunction with myofunctional therapy were used to discourage sucking habit and to adapt normal tongue position. Successful correction of the AOB with adequate overjet and overbite were achieved with total treatment time of 7 months. The importance of myofunctional therapy in adopting normal tongue position and in maintaining the stability of open bite correction is emphasized.


Asunto(s)
Succión del Dedo/terapia , Terapia Miofuncional/métodos , Mordida Abierta/terapia , Diseño de Aparato Ortodóncico , Aparatos Ortodóncicos Funcionales , Niño , Diastema/terapia , Estudios de Seguimiento , Humanos , Incisivo/patología , Masculino , Hábitos Linguales/terapia
4.
Int J Orthod Milwaukee ; 26(4): 19-22, 2015.
Artículo en Inglés | MEDLINE | ID: mdl-27029087

RESUMEN

Class II division 1 malocclusion is the most common malocclusion. It shows specific clinical characteristics such as large overiet and deep overbite resulting in a soft tissue profile imbalance. Majority of the patients with class II division 1 malocclusions have an underlying skeletal discrepancy between the maxilla and mandible. The treatment of skeletal class II division 1 malocclusion is done taking into consideration the age, growth potential, severity of malocclusion, and compliance of patient with treatment. Myofunctional appliances can be successfully used to treat growing patients with class II division 1 malocclusion. This article presents a discussion on successful treatment of class II division 1 malocclusion with growth modification approach using twin block appliances.


Asunto(s)
Maloclusión Clase II de Angle/terapia , Diseño de Aparato Ortodóncico , Aparatos Ortodóncicos Funcionales , Sobremordida/terapia , Cefalometría/métodos , Niño , Humanos , Masculino , Mandíbula/crecimiento & desarrollo , Avance Mandibular/instrumentación , Terapia Miofuncional/instrumentación , Técnica de Expansión Palatina/instrumentación , Planificación de Atención al Paciente
5.
Angle Orthod ; 85(2): 233-8, 2015 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-25017014

RESUMEN

OBJECTIVE: To evaluate the effect of a light-emitting diode (LED) and/or low-level laser (LLL) with or without the use of anterior bite jumping appliances (also known as functional appliances [FAs]) on mandibular growth in rats. MATERIALS AND METHODS: Thirty-six 8-week-old male Sprague-Dawley rats weighing 200 g were obtained from Charles River Canada (St. Constant, QC, Canada) and were divided into six groups of six animals each. Groups were as follows: group 1: LLL; group 2: LLL + FA; group 3: LED; group 4: LED + FA; group 5: FA; and group 6: control (no treatment). Mandibular growth was evaluated by histomorphometric and micro computed tomographic (microCT) analyses. RESULTS: The LED and LED + FA groups showed an increase in all condylar tissue parameters compared with other groups. CONCLUSION: The LED-treated groups showed more mandibular growth stimulation compared with the laser groups.


Asunto(s)
Terapia por Luz de Baja Intensidad/métodos , Mandíbula/crecimiento & desarrollo , Aparatos Ortodóncicos Funcionales , Animales , Cartílago Articular/anatomía & histología , Cartílago Articular/crecimiento & desarrollo , Cartílago Articular/efectos de la radiación , Condrocitos/citología , Condrocitos/fisiología , Condrocitos/efectos de la radiación , Fibrocartílago/anatomía & histología , Fibrocartílago/crecimiento & desarrollo , Fibrocartílago/efectos de la radiación , Terapia por Luz de Baja Intensidad/instrumentación , Masculino , Mandíbula/anatomía & histología , Mandíbula/efectos de la radiación , Cóndilo Mandibular/anatomía & histología , Cóndilo Mandibular/crecimiento & desarrollo , Cóndilo Mandibular/efectos de la radiación , Ratas , Ratas Sprague-Dawley , Microtomografía por Rayos X/métodos
6.
Indian J Dent Res ; 25(5): 662-6, 2014.
Artículo en Inglés | MEDLINE | ID: mdl-25511070

RESUMEN

The lack of the left first molar maxillary and the left second molar maxillary, caused respectively by impaction and agenesis is a very rare case, which determines an important occlusal imbalance and asymmetrical mandible movement. A gnatologic and functional orthodontic approach were planned to improve the retrognathic mandible and the muscular activity using kinesiograph and electromyography.


Asunto(s)
Anodoncia/terapia , Maloclusión Clase II de Angle/terapia , Diente Molar/patología , Diente Impactado/terapia , Cefalometría/métodos , Niño , Electromiografía/métodos , Femenino , Estudios de Seguimiento , Humanos , Avance Mandibular/métodos , Músculo Masetero/fisiopatología , Maxilar/patología , Diente Molar/anomalías , Contracción Muscular/fisiología , Terapia Miofuncional/métodos , Músculos del Cuello/fisiopatología , Aparatos Ortodóncicos Funcionales , Planificación de Atención al Paciente , Retrognatismo/terapia , Músculo Temporal/fisiopatología
7.
Int J Orthod Milwaukee ; 25(1): 11-4, 2014.
Artículo en Inglés | MEDLINE | ID: mdl-24812735

RESUMEN

The aim of this study is to report five cases of children treated with an interceptive technique utilizing ALF (Advanced Light Force) functional orthodontic appliances in anterior and/or posterior cross bites in primary and early mixed dentition.


Asunto(s)
Maloclusión/terapia , Diseño de Aparato Ortodóncico , Aparatos Ortodóncicos Funcionales , Niño , Preescolar , Dentición Mixta , Femenino , Humanos , Masculino , Terapia Miofuncional/instrumentación , Alambres para Ortodoncia , Ortodoncia Interceptiva/instrumentación , Estrés Mecánico , Hábitos Linguales/terapia , Diente Primario
8.
Int J Orthod Milwaukee ; 25(1): 15-20, 2014.
Artículo en Inglés | MEDLINE | ID: mdl-24812736

RESUMEN

Orthodontic treatment of patients with distoclusion combined with dental deep bite and linguo version of the front upper teeth is one of the most difficult forms of malocclusion to treat to a functional and morphological optimum. Our objective was to analyze the efficacy of a fixed anterior bite plane appliance to disclude the teeth and correct this type of malocclusion. At the Department of Orthodontics MSUMD (Moscow State University of Medicine and Dentistry), we proposed the use of a fixed anterior bite plane for the effective treatment of patients with distoclusion combined to a dental deep bite. This appliance was used in 35 patients aged 11 to 15 years (13.2 +/- 1.2) with distoclusion combined with deep bite in a therapeutical approach that also involved an osteopathic correction. The appliance permitted the correction of the distoclusion by discluding the posterior teeth, allowing eruption of the molars and premolars which improved the occlusal plane line (Curve of Spee) and changed the inclination of the upper incisors which liberated the mandible from its retruded position. We also noted an effect on the postural status of the patient.


Asunto(s)
Maloclusión Clase II de Angle/terapia , Diseño de Aparato Ortodóncico , Aparatos Ortodóncicos Funcionales , Sobremordida/terapia , Aparatos Activadores , Adolescente , Diente Premolar/patología , Niño , Oclusión Dental , Humanos , Incisivo/patología , Mandíbula/crecimiento & desarrollo , Mandíbula/patología , Diente Molar/patología , Terapia Miofuncional/instrumentación , Extrusión Ortodóncica , Postura/fisiología
9.
Artículo en Español | BINACIS | ID: bin-131611

RESUMEN

La ortopedia funcional de los maxilares es una especialidad odontológica que trata los problemas funcionales, morfológicos y estéticos del complejo orofacial del paciente en crecimiento. En este contexto, la ortopedia funcional se distingue por su especial interés por la investigación de las causas y posteriores acontecimientos que en el transcurso de un período de tiempo provocan la manifestación clínica de una disgnacia; esta elaboración hipotética se denomina diagnóstico etiopatogénico. A través de una serie de casos clínicos se ejemplifica este proceso de diagnóstico, involucrando antecedentes hereditarios, trauma perinatal, alteraciones posturales, trastornos funcionales deglutorios, respiratorios, fonatorios y masticatorios, así como la biotipología facial. La elaboración de una hipótesis fundamentada que nos permita explicar las causas y acontecimientos que plasmaron el estado actual de nuestro paciente, nos impulsa a investigar, indagar, reflexionar y, finalmente, arribar a un conocimiento más amplio y profundo del mismo. Finalmente, el conocimiento de las posibles causas de la disgnacia nos conduce naturalmente hacia un diseño terapéutico integral.(AU)


Asunto(s)
Humanos , Masculino , Adolescente , Niño , Maloclusión/diagnóstico , Maloclusión/etiología , Aparatos Ortodóncicos Funcionales , Ortodoncia Correctiva/métodos , Anamnesis , Diagnóstico Clínico , Desarrollo Maxilofacial/fisiología
10.
Artículo en Español | LILACS | ID: lil-733702

RESUMEN

La ortopedia funcional de los maxilares es una especialidad odontológica que trata los problemas funcionales, morfológicos y estéticos del complejo orofacial del paciente en crecimiento. En este contexto, la ortopedia funcional se distingue por su especial interés por la investigación de las causas y posteriores acontecimientos que en el transcurso de un período de tiempo provocan la manifestación clínica de una disgnacia; esta elaboración hipotética se denomina diagnóstico etiopatogénico. A través de una serie de casos clínicos se ejemplifica este proceso de diagnóstico, involucrando antecedentes hereditarios, trauma perinatal, alteraciones posturales, trastornos funcionales deglutorios, respiratorios, fonatorios y masticatorios, así como la biotipología facial. La elaboración de una hipótesis fundamentada que nos permita explicar las causas y acontecimientos que plasmaron el estado actual de nuestro paciente, nos impulsa a investigar, indagar, reflexionar y, finalmente, arribar a un conocimiento más amplio y profundo del mismo. Finalmente, el conocimiento de las posibles causas de la disgnacia nos conduce naturalmente hacia un diseño terapéutico integral.


Asunto(s)
Humanos , Masculino , Adolescente , Niño , Maloclusión/diagnóstico , Maloclusión/etiología , Aparatos Ortodóncicos Funcionales , Diagnóstico Clínico , Desarrollo Maxilofacial/fisiología , Anamnesis , Ortodoncia Correctiva/métodos
13.
Neurol Sci ; 32 Suppl 1: S161-4, 2011 May.
Artículo en Inglés | MEDLINE | ID: mdl-21533736

RESUMEN

Tweny patients (M: 4, F: 16, mean age 37 ± 11 years) with diagnosis of chronic daily headache (CDH), after drug withdrawal, were under electromyography, kinesiography and masticatory muscle deprogramming by TENS to identify the physiological rest position of the mandible. Our purpose was to clarify a possible role of the neuromuscular stomatognathic system. Examinations showed that 17 patients needed a neuromuscular orthosis, an occlusal device, to provisionally correct the detected discrepancies of jaw position. Of those, the 10 patients who showed an occlusal sagittal discrepancy higher than 2 mm and/or a lateral deviation higher than 0.4 mm, associated with more than three parafunctional activities, had a meaningful decrease on frequency/intensity of migraine crisis and/or of days of headache. VAS pain score during crisis decreased from 9.0 ± 0.9 to 4.9 ± 2.7; frequency of crisis were from 20.7 ± 5.2 to 9.5 ± 7.7. Baseline pain were from 5.3 ± 1.2 to 3.0 ± 1.3. Satisfying clinical results can be reached combining behavioural education and neuromuscular orthosis. This can be very helpful in patients who show significant discrepancy of jaw position that only TENS deprogramming can reveal and kinesiography can detect with such accuracy.


Asunto(s)
Trastornos de Cefalalgia/etiología , Trastornos de Cefalalgia/terapia , Aparatos Ortodóncicos Funcionales , Trastornos de la Articulación Temporomandibular/complicaciones , Trastornos de la Articulación Temporomandibular/terapia , Estimulación Eléctrica Transcutánea del Nervio , Adulto , Electromiografía , Femenino , Humanos , Masculino
14.
Angle Orthod ; 81(4): 684-91, 2011 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-21299408

RESUMEN

OBJECTIVE: To evaluate the treatment and posttreatment dentoskeletal effects induced by the Mandibular Advancement Repositioning Appliance (MARA) in the treatment of Class II malocclusion. MATERIALS AND METHODS: The treated sample consisted of 23 consecutively treated patients at prepubertal or pubertal stages, as assessed by the cervical vertebral maturation method. A control group of untreated Class II subjects was generated from published normative growth data. Lateral cephalograms were digitized and superimposed via cephalometric software at three different times: T1, pretreatment; T2, post-MARA treatment; and T3, at least 1 year after T2. The T1-T2, T2-T3, and T1-T3 changes in the treated group were compared to those in the control group with independent-sample Student's t-tests. RESULTS: Skeletal and dentoalveolar effects of MARA were assessed after the active phase of the treatment (T1-T2). Mandibular elongation in length (Co-Gn, +2.2 mm) was evident together with lower incisor proclination (IMPA, +5.8 mm). A relapse tendency for IMPA was noticed after removing the appliance (IMPA, -2.1° during T2-T3). Significant skeletal effects (Co-Gn, +2.0 mm) and headgear effects on the maxilla (SNA, -1.2°) were significant in the long term (T1-T3). CONCLUSIONS: The MARA appliance provides an effective correction of Class II malocclusion, which is maintained at a posttreatment observation with a moderate skeletal effect.


Asunto(s)
Maloclusión Clase II de Angle/terapia , Avance Mandibular/instrumentación , Aparatos Ortodóncicos Funcionales , Cefalometría , Niño , Femenino , Humanos , Masculino , Terapia Miofuncional , Estudios Prospectivos , Estadística como Asunto , Resultado del Tratamiento
15.
World J Orthod ; 11(3): 236-44, 2010.
Artículo en Inglés | MEDLINE | ID: mdl-20877732

RESUMEN

Internal derangement of the temporomandibular joint (TMJ) is characterized by an abnormal disc-condyle relationship. Of all the various treatment modalities used in the management of disc displacements, flat occlusal and anterior repositioning splints are the most commonly used. Myofunctional appliances (such as bite-jumping appliances) are also advocated to treat anterior disc displacements. The present study compares the efficacy of twin blocks with conventional flat occlusal splints in patients with anterior disc displacement with reduction using clinical examination, MRI, and EMG. The sample consisted of 20 subjects between 12 and 20 years of age, who were randomly divided into two groups of 10 patients each: Group 1 was treated with twin blocks, while group 2 was treated using maxillary flat occlusal splints. The twin block is more effective in relieving joint pain, diminishing joint dysfunction, reducing joint clicking, and eliminating muscle tenderness in patients with anterior disc displacement with reduction as compared to the occlusal splint.


Asunto(s)
Electromiografía/métodos , Luxaciones Articulares/terapia , Imagen por Resonancia Magnética/métodos , Ferulas Oclusales , Diseño de Aparato Ortodóncico , Aparatos Ortodóncicos Funcionales , Disco de la Articulación Temporomandibular/patología , Trastornos de la Articulación Temporomandibular/terapia , Adolescente , Niño , Dolor Facial/terapia , Femenino , Humanos , Masculino , Cóndilo Mandibular/patología , Músculo Masetero/fisiopatología , Terapia Miofuncional/instrumentación , Rango del Movimiento Articular/fisiología , Sonido , Músculo Temporal/fisiopatología , Resultado del Tratamiento , Adulto Joven
16.
Int J Orthod Milwaukee ; 21(1): 15-23, 2010.
Artículo en Inglés | MEDLINE | ID: mdl-20397512

RESUMEN

Functional Orthopaedics, Functionalism and their appliances have as their objective to correct the skeletal dysplasia that underlies many malocclusions, taking advantage of the potential of the stomatognathic system's strength. The range of functional appliances is very extensive and there is a great variety thereof. Basically, functional appliances can be: removable functional appliances and fixed functional appliances. In this article, we are going to present a new design for fixed functional appliances for the treatment of Class II, basing ourselves on the biomechanical principles of the Twin Block. We believe this new design, compared with other fixed functional appliances currently in use, improves patient comfort, providing a more effective response and helps us to treat our Class II cases with total success.


Asunto(s)
Maloclusión Clase II de Angle/terapia , Diseño de Aparato Ortodóncico , Aparatos Ortodóncicos Funcionales , Técnicas de Movimiento Dental/instrumentación , Adolescente , Femenino , Humanos , Registro de la Relación Maxilomandibular , Masculino , Técnicas de Movimiento Dental/métodos , Adulto Joven
18.
Eur J Orthod ; 32(5): 490-5, 2010 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-20110305

RESUMEN

Orofacial biofunction comprises muscular and physical effects, which may contribute to stabilization of the oropharyngeal airway. The tongue-repositioning manoeuvre (TRM) provides physical stabilization of the tongue and the soft palate together with, as a prerequisite, a nasal breathing mode. The aim of the present study was to evaluate the influence of a TRM treatment concept on primary snoring. The TRM was used to achieve a closed biofunctional rest position of the orofacial system and to re-educate the nasal breathing pattern. Pressure indicating oral shields were used for home exercises as a biofeedback instrument and to support nocturnal mouth closure. Treatment was undertaken on 125 consecutive primary snorers [101 males, mean age 52.4 years, range 34-75, mean body mass index (BMI) 28.1, range 18.9-38.5, and 24 females, mean age 55.2 years, range 36-70, mean BMI 26.8, range 22.7-31.9]. Bed partner ranking was performed, and snoring was judged using a 10-cm visual analogue scale (VAS). The VAS score was 8.4 (range 6-10) before treatment and decreased to 4.1 (range 0-10) after treatment [mean observation time 4.6 months (1-10)]. Analysis of variance showed a significant influence of treatment in subjects with a normal body weight (BMI 18.5-25). The data provide evidence that dynamic stabilization of the orofacial system with the TRM in conjunction with nocturnal wear of an oral shield is beneficial for reducing the symptoms in primary snorers with a normal BMI.


Asunto(s)
Retroalimentación Psicológica/fisiología , Terapia Miofuncional/métodos , Ferulas Oclusales , Ronquido/terapia , Lengua/fisiología , Adulto , Anciano , Femenino , Humanos , Masculino , Persona de Mediana Edad , Orofaringe/anatomía & histología , Aparatos Ortodóncicos Funcionales , Modalidades de Fisioterapia , Ronquido/prevención & control
19.
J Appl Oral Sci ; 17(5): 487-94, 2009.
Artículo en Inglés | MEDLINE | ID: mdl-19936531

RESUMEN

OBJECTIVES: Functional orthodontic devices can modify oral function thus permitting more adequate growth processes. The assessment of their effects should include both facial morphology and muscle function. This preliminary study investigated whether a preformed functional orthodontic device could induce variations in facial morphology and function along with correction of oral dysfunction in a group of orthodontic patients in the mixed and early permanent dentitions. MATERIAL AND METHODS: The three-dimensional coordinates of 50 facial landmarks (forehead, eyes, nose, cheeks, mouth, jaw and ears) were collected in 10 orthodontic male patients aged 8-13 years, and in 89 healthy reference boys of the same age. Soft tissue facial angles, distances, and ratios were computed. Surface electromyography of the masseter and temporalis muscles was performed, and standardized symmetry, muscular torque and activity were calculated. Soft-tissue facial modifications were analyzed non-invasively before and after a 6-month treatment with a functional device. Comparisons were made with z-scores and paired Student's t-tests. RESULTS: The 6-month treatment stimulated mandibular growth in the anterior and inferior directions, with significant variations in three-dimensional facial divergence and facial convexity. The modifications were larger in the patients than in reference children. In several occasions, the discrepancies relative to the norm became not significant after treatment. No significant variations in standardized muscular activity were found. CONCLUSIONS: Preliminary results showed that the continuous and correct use of the functional device induced measurable intraoral (dental arches) and extraoral (face) morphological modifications. The device did not modify the functional equilibrium of the masticatory muscles.


Asunto(s)
Cefalometría/métodos , Electromiografía/métodos , Imagenología Tridimensional/métodos , Aparatos Ortodóncicos Funcionales , Adolescente , Estudios de Casos y Controles , Mejilla/patología , Niño , Oído Externo/patología , Ojo/patología , Estudios de Seguimiento , Frente/patología , Humanos , Procesamiento de Imagen Asistido por Computador , Masculino , Maloclusión Clase I de Angle/patología , Maloclusión Clase I de Angle/terapia , Mandíbula/crecimiento & desarrollo , Mandíbula/patología , Músculo Masetero/fisiopatología , Maxilar/patología , Boca/patología , Respiración por la Boca/patología , Respiración por la Boca/terapia , Terapia Miofuncional/instrumentación , Nariz/patología , Diseño de Aparato Ortodóncico , Ortodoncia Interceptiva , Procesamiento de Señales Asistido por Computador , Músculo Temporal/fisiopatología , Dimensión Vertical
20.
J. appl. oral sci ; 17(5): 487-494, Sept.-Oct. 2009. ilus, tab
Artículo en Inglés | LILACS | ID: lil-531402

RESUMEN

OBJECTIVES: Functional orthodontic devices can modify oral function thus permitting more adequate growth processes. The assessment of their effects should include both facial morphology and muscle function. This preliminary study investigated whether a preformed functional orthodontic device could induce variations in facial morphology and function along with correction of oral dysfunction in a group of orthodontic patients in the mixed and early permanent dentitions. MATERIAL AND METHODS: The three-dimensional coordinates of 50 facial landmarks (forehead, eyes, nose, cheeks, mouth, jaw and ears) were collected in 10 orthodontic male patients aged 8-13 years, and in 89 healthy reference boys of the same age. Soft tissue facial angles, distances, and ratios were computed. Surface electromyography of the masseter and temporalis muscles was performed, and standardized symmetry, muscular torque and activity were calculated. Soft-tissue facial modifications were analyzed non-invasively before and after a 6-month treatment with a functional device. Comparisons were made with z-scores and paired Student's t-tests. RESULTS: The 6-month treatment stimulated mandibular growth in the anterior and inferior directions, with significant variations in three-dimensional facial divergence and facial convexity. The modifications were larger in the patients than in reference children. In several occasions, the discrepancies relative to the norm became not significant after treatment. No significant variations in standardized muscular activity were found. CONCLUSIONS: Preliminary results showed that the continuous and correct use of the functional device induced measurable intraoral (dental arches) and extraoral (face) morphological modifications. The device did not modify the functional equilibrium of the masticatory muscles.


Asunto(s)
Adolescente , Niño , Humanos , Masculino , Cefalometría/métodos , Electromiografía/métodos , Imagenología Tridimensional/métodos , Aparatos Ortodóncicos Funcionales , Estudios de Casos y Controles , Mejilla/patología , Oído Externo/patología , Ojo/patología , Estudios de Seguimiento , Frente/patología , Procesamiento de Imagen Asistido por Computador , Maloclusión Clase I de Angle/patología , Maloclusión Clase I de Angle/terapia , Mandíbula/crecimiento & desarrollo , Mandíbula/patología , Músculo Masetero/fisiopatología , Maxilar/patología , Respiración por la Boca/patología , Respiración por la Boca/terapia , Boca/patología , Terapia Miofuncional/instrumentación , Nariz/patología , Diseño de Aparato Ortodóncico , Ortodoncia Interceptiva , Procesamiento de Señales Asistido por Computador , Músculo Temporal/fisiopatología , Dimensión Vertical
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